Keycloak-policy-enforcer: keycloak policy enforcer: authorization bypass via incorrect uri comparison

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-9800
StatePUBLISHED
Assignerredhat
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-06-25 17:17:04 UTC
Updated2026-07-15 01:17:10 UTC
DescriptionA flaw was found in Keycloak Policy Enforcer. This vulnerability allows any authenticated user to bypass all authorization policies, including role, scope, and User-Managed Access (UMA) permission checks. By including the configured access-denied page path within a request URL, either as a path segment or a query parameter, an attacker can gain unauthorized access to protected resources.

Risk And Classification

Primary CVSS: v3.1 8.1 HIGH from ADP

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

EPSS: 0.003010000 probability, percentile 0.220250000 (date 2026-07-17)

Problem Types: CWE-1025 | CWE-1025 Comparison Using Wrong Factors

VersionSourceTypeScoreSeverityVector
3.1ADPCVSS8.1HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
3.1[email protected]Secondary8.1HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
3.10b0ca135-0b70-47e7-9f44-1890c2a1c46cSecondary8.1HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
3.1CNACVSS8.1HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Redhat Build Of Keycloak All All All All
Application Redhat Build Of Keycloak All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Red Hat Red Hat Build Of Keycloak 26.4 unaffected 26.4.13-1 * rpm Not specified
CNA Red Hat Red Hat Build Of Keycloak 26.4 unaffected 26.4-19 * rpm Not specified
CNA Red Hat Red Hat Build Of Keycloak 26.4 unaffected 26.4-19 * rpm Not specified
CNA Red Hat Red Hat Build Of Keycloak 26.4.13 Not specified Not specified
CNA Red Hat Red Hat Build Of Keycloak 26.6 unaffected 26.6.4-2 * rpm Not specified
CNA Red Hat Red Hat Build Of Keycloak 26.6 unaffected 26.6-8 * rpm Not specified
CNA Red Hat Red Hat Build Of Keycloak 26.6 unaffected 26.6-8 * rpm Not specified
CNA Red Hat Red Hat Build Of Keycloak 26.6.4 Not specified Not specified
CNA Red Hat Red Hat Build Of Quarkus Not specified Not specified
CNA Red Hat Red Hat JBoss Enterprise Application Platform Expansion Pack Not specified Not specified
CNA Red Hat Red Hat Satellite 6 Not specified Not specified
CNA Red Hat Red Hat Satellite 6 Not specified Not specified
CNA Red Hat Red Hat Single Sign-On 7 Not specified Not specified
ADP Red Hat Red Hat Build Of Keycloak 26.4 unaffected 26.4.13-1 * rpm Not specified
ADP Red Hat Red Hat Build Of Keycloak 26.4 unaffected 26.4-19 * rpm Not specified
ADP Red Hat Red Hat Build Of Keycloak 26.4 unaffected 26.4-19 * rpm Not specified
ADP Red Hat Red Hat Build Of Keycloak 26.4.13 Not specified Not specified
ADP Red Hat Red Hat Build Of Keycloak 26.6 unaffected 26.6.4-2 * rpm Not specified
ADP Red Hat Red Hat Build Of Keycloak 26.6 unaffected 26.6-8 * rpm Not specified
ADP Red Hat Red Hat Build Of Keycloak 26.6 unaffected 26.6-8 * rpm Not specified
ADP Red Hat Red Hat Build Of Keycloak 26.6.4 Not specified Not specified
ADP Red Hat Red Hat Build Of Quarkus Not specified Not specified
ADP Red Hat Red Hat JBoss Enterprise Application Platform Expansion Pack Not specified Not specified
ADP Red Hat Red Hat Satellite 6 Not specified Not specified
ADP Red Hat Red Hat Satellite 6 Not specified Not specified
ADP Red Hat Red Hat Single Sign-On 7 Not specified Not specified

References

ReferenceSourceLinkTags
bugzilla.redhat.com/show_bug.cgi 0b0ca135-0b70-47e7-9f44-1890c2a1c46c bugzilla.redhat.com Vendor Advisory
access.redhat.com/errata/RHSA-2026:30084 0b0ca135-0b70-47e7-9f44-1890c2a1c46c access.redhat.com Vendor Advisory
security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-9800.json 0b0ca135-0b70-47e7-9f44-1890c2a1c46c security.access.redhat.com Vendor Advisory
access.redhat.com/errata/RHSA-2026:30050 0b0ca135-0b70-47e7-9f44-1890c2a1c46c access.redhat.com Vendor Advisory
access.redhat.com/errata/RHSA-2026:30083 0b0ca135-0b70-47e7-9f44-1890c2a1c46c access.redhat.com Vendor Advisory
access.redhat.com/errata/RHSA-2026:30049 0b0ca135-0b70-47e7-9f44-1890c2a1c46c access.redhat.com Vendor Advisory
access.redhat.com/security/cve/CVE-2026-9800 0b0ca135-0b70-47e7-9f44-1890c2a1c46c access.redhat.com Vendor Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Red Hat would like to thank Bas Levering for reporting this issue. (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-05-28T03:57:56.111ZReported to Red Hat.
CNA2026-05-19T00:00:00.000ZMade public.
ADP2026-05-28T03:57:56.111ZReported to Red Hat.
ADP2026-05-19T00:00:00.000ZMade public.

Solutions

ADP: RHSA-2026:30050: Red Hat build of Keycloak 26.4

ADP: RHSA-2026:30084: Red Hat build of Keycloak 26.6

ADP: RHSA-2026:30049: Red Hat build of Keycloak 26.4.13

ADP: RHSA-2026:30083: Red Hat build of Keycloak 26.6.4

Workarounds

CNA: Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.

ADP: Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.

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